传奇电子教室15.0技术白皮书
计算机白皮书
新东方在线考研计算机说明书1.专业的解读：专业方向、专业考察情况、专业院校的情况1）专业方向：随着计算机应用到各个领域，计算机方向也变得多样化，主要包括：(081200)计算机科学与技术、(081201)计算机系统结构、(081202)计算机软件与理论、(081203)计算机应用技术、 (83500)软件工程、(85208)电子与通信工程（专业学位）、(85211)计算机技术（专业学位）、(85212)软件工程（专业学位）、(0812Z1)★信息安全、(0812Z2)★智能科学与技术、(0812J3)数据科学和信息技术、(0812Z1)高可靠嵌入式系统、网络与信息安全、数字化艺术与设计、模式识别与智能系统、人工智能与信息处理。
2)专业考察情况：计算机考研包括统考和非统考两种形式。
统考为(408)计算机学科专业基础综，具体考察的科目包括：数据结构（45分）、计算机组成原理（45分）、操作系统（35分）、计算机网络（25分）。
非统考由各个招生院校自主命题，比如清华(912)计算机专业基础综合、北大(907)计算机学科专业基础综合，但是基本考察科目以数据结构、计算机组成原理、操作系统、计算机网络四门为主，或者其中几门，个别专业倾向性强的专业，可能还考察其他科目，具体看各个院校的招生简章。
3)专业院校的情况：随着计算机行业变的异常火热，国内几乎所有院校都在开设相关课程。
但是专业实力强的还是那些老牌院校，主要包括：清华大学、浙江大学、哈尔滨工业大学、北京大学、东南大学、东北大学、西北工业大学、安徽大学、上海交通大学、华中科技大学、北京航空航天大学、北京理工大学、西安电子科技大学、西安交通大学、电子科技大学、北京工业大学、复旦大学、武汉大学、同济大学、南京大学、中国科学技术大学、四川大学、天津大学、北京邮电大学等。
2.专业考察科目的解读：分数线、科目考什么、参考书、怎么学、学2)参考书：四门基础课程的参考书目主要为：数据结构（《数据结构》（C语言版）（严蔚敏清华大学出版社））、组成原理（《计算机组成原理（第2版）》（唐朔飞高等教育出版社)）、操作系统（《计算机操作系统》（汤子瀛西安电子科技大学出版社））、计算机网络（《计算机网络》（谢希仁电子工业出版社））。
戴尔技术白皮书 通用应用和空气遏制的优势：实用指南说明书
UNIVERSAL APPLICA TION AND BENEFITS OF AIR CONT AINMENT: A PRACTICAL GUIDEA Dell™ Technical White PaperDavid L. MossDell|Data Center InfrastructureTHIS WHITE PAPER IS FOR INFORMATIONAL PURPOSES ONLY, AND MAY CONTAIN TYPOGRAPHICAL ERRORS AND TECHNICAL INACCURACIES. THE CONTENT IS PROVIDED AS IS, WITHOUT EXPRESS OR IMPLIED WARRANTIES OF ANY KIND.© 2009 Dell Inc. All rights reserved. Reproduction of this material in any manner whatsoever without the express written permission of Dell Inc. is strictly forbidden. For more information, contact Dell.Dell and the DELL logo are trademarks of Dell Inc. Liebert is a trademark of Liebert Corporation. APC is a registered trademark of American Power Conversion.Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.Table of ContentsIntroduction (2)Nomenclature (3)Greenfield vs. Brownfield (4)Supply vs. Return (4)Materials and Flexibility (5)Tightly Coupled vs. Loosely Coupled Containment (5)More on Rack Level Containment (6)Non Hot/Cold Aisle Facilities (8)Summary (8)To operate more efficiently and at higher densities with the ability to predictably deploy IT hardware with less thermal risk, implement containment. Embrace containment aggressively; the approach to containment is a bit like the approach to virtualization. If you experiment with it lightly, you might only see minor benefits like rack density increases. Like virtualization, it takes a strong commitment. You need to contain most, if not all, of the data center in order to tap into large efficiency benefits. Both Liebert™ and APC® have good papers 1,2•An increase in coil capacity accompanying the higher return temperatures associated with containment on containment. Although they do show some bias for their own solutions, they agree on major benefits such as:•Near or absolute 100% sensible operation (no energy lost to condensation and humidification) • The opportunity to raise temperatures and save energy in the chilling processIn addition to these benefits, it should also be mentioned that the elimination of hot spots would result in theimmediate lowering of IT equipment fan power in the affected areas. For a more detailed example of containment-related energy savings, please refer to The Energy Advantages of Containment Systems 3The goal of this paper is not to come to an absolute conclusion as to which solution is the best. What is ideal for one facility will not be ideal for another. However, this paper will point out some of the key considerations to explore in determining the best solution for your facility. The following points are addressed in this paper:Dell whitepaper.•Greenfield vs. Brownfield? •Supply (intake) vs. return (exhaust) containment •Materials and flexibility •Rack level vs. row level containment •Closely coupled vs. loosely coupled1 Focused Cooling Using Cold Aisle Containment, Emerson Network Power, 2009; /common/ViewDocument.aspx?id=12952 Hot Aisle vs. Cold Aisle Containment, John Neimann, 2008; /salestools/DBOY-7EDLE8_R0_EN.pdf3 The Energy Advantages of Containment Systems; David Moss; 2009; /us/en/corp/d/business~solutions~whitepapers~en/Documents~dci-energy-advantages-of-containment-systems.pdf.aspxFor the purposes of this paper, we will attempt to categorize and name different types of containment. StationaryAisle containment like the APC Hot Aisle Containment (HAC) or Liebert Cold Aisle Containment (CAC) is a hard-paneled structure assembled in place that contains integral attachment points to the IT racks. These solutionscontain multiple racks. APC’s solution is designed specifically around their InRow coils,and it contains the hot aisle. Liebert’s solution contains the cold aisle and can bedesigned to contain raised-floor venting and Liebert XD systems. In each solution,hard-paneled construction includes doors and a ceiling structure. This type ofcontainment is typically more stationary and requires more effort to refresh new racksor additional cooling units in comparison to other solutions that are not as integrated. Hanging PartitionsHanging partitions are often referred to as meat locker curtains. Vendorsof these products have both hard and flexible material versions. They aretypically hung from ceiling structures and lightly touch the racks (if theytouch at all). They often are intentionally hung with gaps at the ceiling toallow smoke to pass horizontally and activate fire prevention systems aswell as the fuse links used to hang the partitions themselves. Since thepartitions are not tied to the IT racks, it is generally easier to refreshindividual racks. The containment is looser than with stationary solutions. This picture in one of Dell’s data centers depicts cold aisle containment with both floor and overhead delivery. Hanging partitions can also be used effectively as hot aisle containment.Rack ChimneysRack Chimney solutions add ductwork to each rack. With the rear of the rack closed up, this rack istightly coupled to the IT systems. The chimney is typically extended to a false ceiling which is usedas a return plenum and also ducted to the CRAC units. Unless the chimney contains fans or theCRAC units pull air through the return plenum to aid the flow through the rack, the rack andchimney add pressure to the IT systems. This either slows the flow rate through the systems orcauses them to speed up to maintain proper airflow. There is some debate in the industry as towhether chimneys should be deployed with serial fan units that help the IT fans to evacuate therack.If you have the luxury of a Greenfield opportunity, your options are obviously less limited. Some containment solutions are less invasive in the installation process. Since hanging partitions are not structurally tied to the racks, they tend to be an easier solution to use in a retrofit situation. As a retrofit, a chimney may require serverdowntime, especially for servers located high in the rack. Stationary solutions require attachment to existing racks and possibly drilling holes; this might make some owners uncomfortable. Even if you prefer a more substantial containment system like a stationary HAC or CAC, you might consider the hanging partition products for the retrofit portion of the data center and use your preferred choice for all new racks. The partition products areinexpensive and might be eventually switched out with your preferred choice as IT product is refreshed. Whatever solution you choose, your goal should be to get the entire data center contained so you can reap full efficiency benefits.Supply vs. ReturnHVAC vendors often have strong opinions that favor their own products, and suggest sharp contrasting density limitations specifically for cold aisle containment. However, both Cold Aisle Containment (CAC) and Hot AisleContainment (HAC) can be set up for high density. Hot aisle may offer more flexibility to apportion more density in one area at the detriment of another. In either case, the goal is to provide an adequate compliment to the air consumption rate of the IT equipment. It is the volumetric delivery of the facility that establishes any densitylimitation that might exist for each rack. This is why hot aisle containment may offer a local advantage. With a cold aisle solution there is a finite number of vent tiles. Since the aisle containment captures the vent tiles, the number of vents cannot be increased; it is typically no more than a single vent per rack. In contrast, a hot aisle containment solution does not capture the vents. Venting outside the perimeter of the pod can actually supply the pod with additional airflow.APC makes a similar argument regarding the limitations of cold aisle delivery 4,5Consider this high-density example computed using Dell’s Energy Smart Solutions Advisor(. The APC papers go one step further; they make assumptions about typical raised floor limitations, arguing that a maximum of approximately 600 CFM on average can be delivered through a single vent. APC equates this to a limitation of 6 kW per cabinet which takes their argument past the differences between HACs and CACs, resulting in an argument between raised floor delivery and their InRow products. It can be argued that this as an artificial limitation used to support the claim of superiority of the row cooling product. Higher CRAC-to-vent ratios allow a raised floor to easily achieve higher flow rates. A data center lab at one of the Dell facilities averages twice that value (1200 CFM) per vent. The APC argument of 100 CFM per kW is a good rule of thumb for generic legacy hardware. Today’s Dell servers,however, have much more efficient thermal designs and typically operate closer to 80 CFM per kW. If you combine higher vent flow rates with the fact that newer IT consumes less than 100 CFM per kW, an argument similar in approach to that in the aforementioned APC paper can be made in support of greater than 10 kW per rack. /calc ). A 1U server with high-end processors and 32 GB of memory consumes 324 watts and uses 25.6 CFM, which amounts to just 79 CFM per kW. Assuming 80 CFM per kW and an average of 1200 CFM per vent, the raised floor would support 15 kW per vent if that flow rate is delivered effectively to the rack.Containment is one way to ensure that the 1200 CFM supplied gets consumed effectively to achieve the full 15 kW.4 Hot Aisle vs. Cold Aisle Containment, John Neimann, 2008; /salestools/DBOY-7EDLE8_R0_EN.pdf5 Cooling Strategies for Ultra-High Density Racks and Blade Servers, Neil Rasmussen, 2006; /salestools/SADE-5TNRK6_R5_EN.pdfperceived density advantage. Ultimately, the data center is limited by the total amount of flow available from all the CRAC units. If a hot aisle containment enables an incremental advantage in one area because it can take advantage of adjacent vents outside of the perimeter of the pod, it uses up more of the aggregate CRAC flow rate, and other areas will be slighted. The HAC/CAC decision is more likely based on whether or not the facility already has a return ceiling plenum. It might also just be made on the basis of human comfort, since a HAC renders the personnel space comfortable in terms of temperature, and a CAC essentially uses the entire data center as a return plenum.Materials and FlexibilityAesthetics are important to many data center owners. Some may not have considered hanging partitions for that reason. These systems are gaining in popularity quickly, and their appearance is not as terrible as some people may think. Hard plastic versions are available; they are a bit more expensive than the meat-locker type material, but they are generally perceived as more attractive. Besides their cost advantage over other containment products, some Dell customers find more flexibility with this type of product. The stationary aisle containments typically tie the racks into a pod. Any reconfiguration that entails breaking up the pod will be easier with a hanging partition solution. Hanging partitions are readily available from a variety of vendors, and you can engage Dell Energy Optimization Services for assistance as they can install these types of products for you. Hanging partitions work well as either hot or cold aisle containment. Interestingly, in talking to the vendors of these products, the majority of their deployments have been cold aisle containment. Presumably, this is due to the absence of an existing ceiling return plenum. An additional consideration when contemplating flexible curtains is that, depending upon the criticality of the data center, the data center’s insurance company may have reservations about the flexible material. Even if a fire marshal has signed off on the product, the insurance company may be more conservative and oppose the flexible curtain material.Tightly Coupled vs. Loosely Coupled ContainmentThere are varying degrees of coupling between coil products and IT racks. The minimum goal behind containment is to separate supply and return paths. Above and beyond this minimum goal is an opportunity to more closely match coil flow rates to rack consumption (minimizing waste). The ability to achieve a flow match is proportional to the physical tightness of the coupling between the racks and coils.Hanging Partitions Stationary Rack LevelGreatest Air Over-Provision Least Air Over-ProvisionWith looser coupling, more air overage is required from the coils. Hanging partitions are arguably the loosest since they typically have designed gaps (for example, at the ceiling). The exhaust chimney appears to be the tightest common form of containment. Stationary containment systems range in between the two. Because aisle containment spans many racks, it is quite difficult to make it as “airtight” as a rack chimney. Gaps in the construction, under or between racks, are likely to exist. Any mismatch in flow rate between the coils and the racks will find these leaks. Stationary systems probably require more over-provision of air from the coils than a tightly coupled chimney but not as much as with hanging partitions.of external pressure added to a server, storage, or networking product elicits one of two responses―t he airflow slows and component temperatures climb, or the IT fans respond with additional fan energy to boost the flow rate back to its intended design point. What is meant by external pressure? A small amount of external pressure is added, for instance, when IT is put into a standard front-to-rear cooled rack and the front and rear perforated doors are closed. As a result, some negative pressure is applied to the front of the IT system and some positive pressure to the back of the system. Similarly, contained systems, like rack chimneys or door coils, typically impart two to three times the external pressure as a standard “flow through” rack due to their added airflow resistance. The IT system’s thermal design will determine whether or not its response to pressure is an increase in component temperature, an increase in fan power, or some compromise of the two. Newer systems will likely tend toward a fan speed increase. They have more components enabled with temperature sensors that contribute to the system’s fan response algorithms. If the system design is optimized, it will respond to even small pressure changes that would otherwise have resulted in a component temperature increase. Older IT systems have less discrete component temperature measurement capability and are typically designed more conservatively with higher thermal margins. They typically respond with less of a fan speed increase unless the pressure is large. The IT manufacturer should be able to advise you as to the impact of pressure on his or her system. Dell has historically designed with enough margin to handle the pressure added by a standard rack (two perforated doors) and a full cable management apparatus (translating arm).Therefore, even if the fans do not spin up due to pressure, minor component temperature increases do not exceed specification limits. More details of how Dell systems respond to external pressure can be found in the IT Equipment Response to External Pressure Dell whitepaper6.More on Rack Level ContainmentChimney systems are not the only form of rack containment, although they are probably the most widely used. Enclosed racks with side-car coils also could be considered contained solutions since they separate the hot from the cold. Rear door coils are another product which could technically be considered contained. Any of these systems may have impacts on the IT fan response as mentioned in the paragraphs above.Passive Chimney SystemsCare should be used when deploying passive chimney systems. A good design should impart little to no external pressure on the IT systems within the racks. While in some cases the air handlers may facilitate the flow through the racks and chimneys by creating a significant negative pressure in the ceiling return, a test should always be carried out to determine the presence of negative pressure in the chimneys and rack rears. If the air handlers do not improve the flow through the chimney, an increase of IT fan energy may occur. In addition, you may risk a pressure build-up at the back of the rack because the IT equipment is pushing the air up the chimney, which will cause a larger recirculation between the IT systems. This may not be a concern with larger systems such as blades where there are only a few chassis per rack. However, the 20 to 40 small gaps between 1 and 2U systems can add up. Increased recirculation could raise inlet temperatures and limit the extent to which you raise the overall data center temperature, thus limiting savings at the chiller.New Dell Rack ContainmentDell is currently working on another form of containment―a rack-level containment product that alters the normal front-to-rear flow pattern and converts it to bottom-to-rear. The strategy is scheduled for release late next year. Like other containment solutions, it enables similar energy savings opportunities. It will be a tightly coupled6 IT Equipment Response to External Pressure, Robert Curtis/David Moss, 2009to the floor and not the ceiling, it is more of a plug-and-play solution than most other containment solutions. The rack can be rolled up with no connections other than the vent underneath. Since that coupling surrounds the vent, it has the ability to affect the flow exiting the vent. Up to a certain rack density, the floor tends to dominate and actually aid the IT system’s flow rate; it may lower the IT fan energy as the IT systems try to throttle down flow rates. Above that density, the IT systems in the rack tend to dominate, extracting a greater volume than normal out of the floor. There is no specific density limit with this rack. High densities mean higher airflow which typically translates into increased IT equipment fan energy. This energy increase is in line with the increases cited for other rack solutions in IT Equipment Response to External Pressure7. A slight increase in IT fan energy may be acceptable. in order to achieve facility energy savings like those detailed in The Energy Advantages of Containment Systems8 There are further advantages to this rack level containment strategy. Due to the tight coupling with the floor, the rack has the ability to affect the pressure under the floor. In the case where multiple racks have spun up and increased their air consumption, a constantly supplied raised floor would normally see a decrease in under-floor pressure and a drop in the flow rate through other vents. Air handlers (CRAH units) can be configured to adjust their flow rates based on under-floor pressure. Rather than link airflow control with return or supply temperature (as is more common), variable speed fans in the air handlers speed up or slow down to maintain a specific pressure under the floor. This control strategy typically allows data centers to deploy new hardware with less concern about the adequacy of airflow delivery. As new racks are added, vents are installed as well. The increase in the number of vents would normally drop the pressure and the flow through all vents. The CRAH units, however, compensate to correct the pressure. As long as the CRAH unit flow rates are not at their maximum, the addition of new IT racks is accompanied by an increase in the CRAH unit flow rates.Similarly, as IT equipment dynamically drives rack flow rates up or down, a tightly coupled rack like the Dell containment rack could have a dynamic coupling to the CRAH units. This would be accomplished indirectly through their common pressure connection, the raised floor. Others companies have attempted to achieve similar results by much more complicated means (for example, a competitor introduced a dynamic service with a multitude of sensors feeding into a server to control the floor’s CRAH units).With the Dell solution, a company can have a data center set up such that whenever new racks are added, the CRAH units adjust their flow rates to compensate. Throughout the day, when the IT load changes and the rack airflow fluctuates up and down, the CRAH units also adjust up and down, supplying a near ideal match of air delivery versus rack consumption. The only task the company has is to monitor the Variable Frequency Drive (VFD) settings on the CRAH units to verify how close they are getting to 100%. At some point prior to the unit nearing 100%, another CRAH unit would have been scheduled for bulk airflow infusion into the floor. This situation is comparable to a type of “air buss” where multiple air handlers feed a common buss (the floor plenum) and multiple racks tap into and consume what they need from that buss. In addition to the energy and density advantages obtained with containment solutions, this dynamic coupling with the air handlers specific to the Dell containment rack offers a significant advantage.7 IT Equipment Response to External Pressure, Robert Curtis/David Moss, 20098 The Energy Advantages of Containment Systems; David Moss; 2009;/us/en/corp/d/business~solutions~whitepapers~en/Documents~dci-energy-advantages-of-containment-systems.pdf.aspxNon Hot/Cold Aisle FacilitiesThere are still plenty of facilities that have not converted to hot/cold aisle orientation. Aisle containment strategies rely on the fact that there is already hot/cold aisle orientation. Some of the rack level containment strategies actually do not require hot/cold aisle orientation. Chimneys, self-contained racks, the door coil, and Dell’s new rack containment would all work in a front-to-back oriented facility.SummaryRegardless of the type, containment solutions should be considered in almost any data center setting. The two major areas for reductions in cooling energy are at the chiller and air handler fans. Both of these energy reductions are aided by containment. Containment should be applied to as much of the data center as possible. With the main goal being an increase in overall data center temperature, it may be difficult to achieve without comprehensive containment. Rack densities are also improved with containment. Rack and associated costs are reduced by installing equipment in fewer racks. Finally, some tighter forms of containment, such as the new Dell rack, offer additional benefits in terms of coupling with facility airflow systems to set up a near ideal match of airflow and one that scales with IT load and IT additions..。
传奇电子教室
传奇电子教室15.0体验版帮助====================================================================== ===========================一、概述分为传奇电子教室和配套教学工具两部分。
电子教室又叫多媒体教室、多媒体教学、教学软件、教学控制，用于多媒体教室、计算机教室、仿真教室的教学和培训，集教、学、练、考等各种教学活动于一体，把传统的教学课堂与计算机结合并发展的一款教学软件。
在计算机教学中，电子教室因为功能实用、性价比高，成为利用率最高、使用最广泛的软件之一。
配套工具在“配套工具”目录下，包括传奇电子试题库管理系统和传奇电子课程录制系统，配套工具不需要安装，直接复制到计算机硬盘上即可使用。
配套工具都比较实用，默认为试用版，功能和使用方法详见各自目录下的说明书。
====================================================================== ===========================二、安装说明1、在安装“传奇电子教室”之前，请您做好如下工作：1）配置好网卡的IP地址，学生机的IP地址应与教师机的IP地址在同一网段，并保证教师机与学生机之间连通顺畅；2）关闭所有Windows应用程序，以避免出现不可预见的错误；3）关闭防火墙、反黑客等监控软件，否则可能造成响应延时、不响应等问题；4）尽量不要与其它类型电子教室一起安装，避免干扰；5）如果有硬盘保护或系统还原，请关闭保护和还原；6）如果是升级安装，请先卸载原有程序，重启计算机，再删除安装目录（一般为C:\parasaga）下的所有文件，然后重新安装电子教室程序。
2、教师机程序安装：解压缩后，运行Teacher目录下的setup.exe即可进入教师机程序安装启动界面，可以全部按默认选择安装。
如果您的计算机中已安装瑞星或其它监控软件，当安全提示出现时，全部选择加入白名单或解除阻止，卡巴斯基去掉反黑客，否则软件不能正常使用。
Quantum Scalar i500技术白皮书
SCALAR i500技术白皮书中端智能磁带库平台智能化磁带库1到18台驱动器36到402个磁带槽位模块化扩展，机械臂连续运行按需提供存储容量iPLATFORM体系结构和iLAYER管理系统特点和优势：∙系结构和iLayer管理系统方案将智能管理功能集成到磁带库平台之中。
∙主动监控和远程诊断可以降低50%的服务呼叫，并且将解决问题的时间缩短了30%。
∙将灵活的、模块化的结构与单一的、连续运行的机械臂合成在一起，提高了扩展性、性能和可靠性。
∙新型的扩展模式和按需提供存储容量的增长方式使得磁带库很容易地随着数据量的增长而扩展。
∙内置对SMI-S的支持允许系统被领先的SRM工具直接管理，包括EMC ControlCenter™。
∙其设计结构可以使它很容易地与领先的磁盘备份解决方案集成。
∙Quantum的服务方案将远程诊断功能扩展到了存储生态环境当中∙带有增强服务选项的一年保修服务Scalar® i500是一个智能磁带库平台，可以为增长之中的中端存储环境带来更快、更简单和更可靠的数据保护。
Scalar i500将模块化设计和机械臂连续运行方式结合起来，提供了业界领先的扩展性、性能和可靠性。
加入了QUANTUM的iPlatform 体系结构和iLayer管理方案的设计后，Scalar i500可以让备份管理更简单。
它的主动监控和远程诊断功能可以降低50%的服务呼叫，并且将解决问题的时间缩短了30%。
其按需提供存储容量的扩展模式让它可以在不中断用户处理数据的情况下进行扩展。
而且，Scalar i500设计得可以很容易地与磁盘备份整合，使其成为下一代备份体系结构的理想磁带库产品。
拥有Scalar i500，IT经理们可以放心，他们将拥有可靠和高性能的备份以及可靠的恢复能力。
同时，无论他们的存储需求如何演进，有效的长期数据保护将会使他们轻松进入未来。
照片说明：Scalar i500将模块化设计和机械臂连续运行方式结合起来，提供了业界领先的扩展性、性能可靠性和价值。
技术白皮书(参考)
铁路职工培训学习系统是一个集知识、课程、考试、培训等多种资源以及学习、练习、考试等多种功能为一体的综合性学习系统，为铁路职工学员搭建了一个“随时随地学习知识、课程，练习，考试，培训”的在线教育学习云平台。
伴随着各地从基础教育到高等教育、职业教育院校的数字化校园、电子书包的试点工作的井喷式普及，数字教育出版的产品形态越来越清晰，尤其在目前数字教育出版的众多发展模式中，在线教育平台已成为越来越重要的教育数字出版的发展模式。
虽然教育出版尤其是在线教育平台发展模式在“数字化战略”、内容版权、盈利模式的创新等方面还存在很多不足，但是，在线教育平台开发与建设是数字教育出版领域的一片“新蓝海”，这已成为出版业内普遍的共识，在线教育平台蕴藏着更广阔的市场空间，需要更多的研究与努力。
技术特点：支持多终端，pc端（常用的浏览器，比如谷歌，火狐，360等浏览器），微信端，手机浏览器端，手机APP等都可以使用。
集资讯，知识，试题，课程等公共资源以及培训、考试等个人资源，加之学习、练习、考试，培训等多种功能于一体的综合性学习系统。
公共资源所有人都可以学习，个人资源只能学员自身学习。
为铁路职工学员搭建了一个“随时随地学习知识、课程，练习，考试，培训”的在线教育学习云平台视频的加密2 慕课的特点（1）大规模。
慕课的最大特点就是大规模，主要表现在参与课程资源开发的学校数量大、课程种类多、学生数量大。
比如参与Coursera慕课平台建设的高校和组织超过了110个，课程领域达到了25个之多，一门课程可供成千上万的人学习，人越多越能显示出慕课的优势，与传统课堂教学模式相比，大规模不是负担而是资源。
（2）基于网络。
慕课的课程开发、学习者参与、成绩测验等都是在互联网上完成，不受时空限制。
（3）开放性。
主要表现在教育理念、学习对象和学习方式的开放。
慕课尊崇知识共享（Creative Commons）协议，世界各地的学习者只要可以上网就能学习自己感兴趣的优质课程，不管你是正在上学的学生、上班的工人、家庭主妇或退休老人；慕课不需要学籍，学习者可以自由选择课程进行学习。
技术白皮书模板
技术白皮书模板一、背景介绍。
技术白皮书是一种专门针对某项技术或产品进行详细介绍和分析的文档，通常由技术专家或相关领域的专业人士编写。
它的目的是为了向读者提供全面的技术信息，帮助他们更好地理解和应用这项技术或产品。
本文将介绍技术白皮书的基本结构和写作要点，希望能够帮助文档创作者更好地撰写技术白皮书。
二、技术白皮书的基本结构。
1. 标题，技术白皮书的标题应该简洁明了，能够准确地表达文档的主题内容。
标题通常包括技术或产品的名称，以及简要描述其特点或功能。
2. 摘要，摘要是技术白皮书的开篇部分，主要包括对技术或产品的简要介绍，以及文档的主要内容和结论。
摘要应该简洁明了，能够吸引读者的注意力，让他们对文档的内容产生兴趣。
3. 目录，目录是技术白皮书的重要组成部分，它能够帮助读者快速地找到所需的信息。
目录应该包括文档中各个章节和子章节的标题，以及对应的页码。
4. 引言，引言部分主要包括对技术或产品的背景介绍，以及编写技术白皮书的目的和意义。
引言应该能够让读者对文档的主题有一个初步的了解，为后续内容的阅读打下基础。
5. 技术原理，技术原理部分是技术白皮书的核心内容，主要介绍技术或产品的工作原理、技术特点和优势等方面的内容。
这部分内容应该详细全面，能够让读者对技术或产品有一个深入的了解。
6. 应用场景，应用场景部分主要介绍技术或产品的应用领域和具体应用情况，以及在实际应用中的效果和优势。
这部分内容应该具体生动，能够让读者对技术或产品在实际应用中的表现有一个清晰的认识。
7. 总结，总结部分是技术白皮书的结尾部分，主要对文档的主要内容进行总结和概括，强调技术或产品的优势和特点。
总结应该简洁明了，能够给读者留下深刻的印象。
三、技术白皮书的写作要点。
1. 准确性，技术白皮书的内容应该准确无误，不能存在错误或不实的信息。
作者在撰写文档时应该对技术或产品有深入的了解，确保所写内容符合实际情况。
2. 逻辑性，技术白皮书的内容应该具有良好的逻辑性，各个部分之间应该有明确的逻辑关系，能够让读者顺利地理解和接受所述内容。
戴尔技术白皮书 PowerEdge VRTX CMC 功能说明书
Features of CMC for PowerEdge VRTX Features—Enabled by Digital Licensing This Dell TM Technical White Paper provides information about the CMC for PowerEdge VRTX features enabled by digital licensingAuthor(s)Michael BrundridgeContentsIntroduction (3)Understanding the VRTX CMC Express and Enterprise Offerings (3)VRTX CMC Feature Guide (3)License Manager (5)Tracking Your VRTX CMC Licenses (5)Licensed Feature Description (5)Extended iDRAC Management (5)Server Module Firmware Update (5)Remote Syslog (5)Directory Services (6)iDRAC Single Sign-On (6)Two-Factor Authentication (6)PK Authentication (6)Remote File Share (6)Slot Resource Assignment/Management (7)Server Configuration/Cloning (7)Server Power Management (7)Chassis Grouping (8)Enclosure Backup (8)FlexAddress Enablement (8)Dynamic Power Supply Engagement (8)IntroductionThis Whitepaper provides an overview of the features enabled by the Digital Entitlement License Manager embedded within the VRTX Chassis Management Controller (CMC). Understanding the VRTX CMC Express and Enterprise Offerings For VRTX CMC, Dell offers the following license types:1.Express2.EnterpriseExpress license offers embedded tools, console integration, and simplified remote access. Enterprise provides the administrator a management experience that makes the administrators feel they are in the physical vicinity of a chassis.VRTX CMC Feature GuideTable 1 compares the features available for VRTX CMC Express license and CMC Enterprise license.If you are unable to decide about a CMC option, or if you would like to try the features before you buy, you can evaluate the features of CMC Enterprise by requesting for a 30–day trial license, and then download and install the license on the target system and the features will be activated for30days.Table 1. A Detailed Comparison of CMC FeaturesRACADM (SSH, Local and Remote) ✓✓WS-MAN ✓✓SNMP ✓✓Telnet ✓✓SSH ✓✓Web-based Interface ✓✓CMC Network ✓✓CMC Serial Port ✓✓Stacking Port n/a n/a Email Alerts ✓✓Enclosure Restore ✓✓LCD Deployment ✓✓Extended iDRAC Management ✓Server Module Firmware Update✓ Remote Syslog ✓iDRAC Single Sign-On ✓Server Configuration ✓Chassis Grouping ✓Enclosure-level Backup ✓Two-Factor Authentication * ✓ PK Authentication * ✓Remote File Share * ✓Directory Services *,1✓Server Power Management 2✓FlexAddress Enablement 3 ✓ Slot Resource Assignment/Management 4,5✓Dynamic Power Supply Engagement 6 ✓1For Non default directory service setting, only Reset Directory Services is allowed with Express license. Reset Directory Services will set the Directory services to the factory default.2For non-default power cap setting, only Restore Power Cap is allowed with Express license. Restore Power Cap will reset the Power Cap settings to factory default.3 For non-default Flex Address settings, only Restore Default is allowed with Express license. Restore Default will reset the Flex address settings to factory default.4 A maximum of two PCIe adapters can be assigned per server with an Express License.5For non-default mapping of virtual adapters, only Default mapping is allowed with Express license. Restore Default will change virtual adapter mapping to factory default.6For non-default DPSE settings, only Restore DPSE is allowed with Express license. Restore DPSE will reset the DPSE to factory default.* To utilize server-based iDRAC Two-Factor Authentication, PK Authentication, Remote File Share, or Directory Services requires the server(s) to also have an Enterprise license installed.License ManagerThe VRTX CMC utilizes the same License Manager utilized in 12G iDRAC. The License Manager is capable of managing digital entitlements for the VRTX CMC and chassis infrastructure. To utilize the VRTX CMC License Manager, log in to the CMC and navigate to the Chassis Overview> Setup> Licenses tab. The License Manager displays an inventory of licensable devices on its main page. Tracking Your VRTX CMC LicensesDell offers an online portal to keep track of all your VRTX CMC licenses and other Dell digital entitlements. For example, information is shown about the chassis or server that has Enterprise licenses, or even Trial licenses. Chassis or servers can be sorted on the basis of service tags. In the unlikely event of a non-functioning device with an associated license, Dell stores a copy of the entitlement and makes it available to you in an online License Management portal(/support/retail/lkm). The only additional task that you must complete after deploying your new chassis and servers into production is to set up your “My Account”, and authorize users who can access the digital license on Dell’s License Management Portal. The online portal is the best way to review all your Dell licenses.For more information about using License Manager, see the Chassis Management Controller for PowerEdge VRTX User’s Guide available at /support/manuals. For more information about using License Manager and the online licensing, see the VRTX Licensing White Paper. Licensed Feature DescriptionThe following sections will briefly describe each Enterprise licensed feature:Extended iDRAC ManagementReserved for a future use.Server Module Firmware UpdateThe Server Module Firmware Update feature allows you to manage the firmware of the components and devices on the servers through the CMC using the servers Lifecycle Controller service. The Lifecycle Controller is a service available on each server and is facilitated by an iDRAC. Remote SyslogThe Remote Syslog feature allows an administrator the ability to use additional remote targets for log messages supporting remote syslog. Various VRTX Chassis events can be configured to output to a remote syslog service by using an event filter in the VRTX CMC Web interface under Chassis Overview >Alerts.Directory ServicesThe Directory Services maintains a common database for storing information about users, computers, printers, and others on a network. If you use either Microsoft® Active Directory® or Generic Lightweight Directory Access Protocol (LDAP) services, you can configure the service to provide access to the CMC, allowing you to add and control CMC user privileges to the existing users in your directory service.iDRAC Single Sign-OnThe iDRAC Single Sign-On feature allows a user to launch the iDRAC GUI or Remote Console from the CMC without having to sign on to the target server, a second time. The Single Sign-On policy is as follows:• A CMC user who has the Server Administrative privilege is automatically logged in to iDRAC using single sign-on. After logging in to the iDRAC GUI, this user is automatically grantedAdministrator privileges. The login occurs even if the user does not have an iDRAC account, or has an account without an Administrator’s privileges.• A CMC user without the Server Administrative privilege, but having the same account on iDRAC is automatically logged in to iDRAC using single sign-on. After logging in to the iDRAC GUI, the user is granted the privileges assigned to the iDRAC account.• A CMC user who does not have the Server Administrative privilege, or the same account on the iDRAC will not be automatically logged in to iDRAC using single sign-on. This user isdirected to the iDRAC login page when the Launch iDRAC GUI or the Launch RemoteConsole button is clicked.Two-Factor AuthenticationTwo-factor Authentication provides a higher-level of security by requiring users to have a password or PIN, and a physical card containing a private key or digital certificate. Kerberos uses this two-factor authentication mechanism allowing systems to prove their authenticity.PK AuthenticationPK Authentication allows you to configure up to six public keys that can be used with the service username over an SSH interface. The service username is a special user account that can be used when accessing the CMC through SSH. When the PKA over SSH is set up and used correctly, you need not enter username or passwords to log in to the CMC. This can be very useful to set up automated scripts to perform various functions.Remote File ShareThe Remote File Share feature enables the ability to connect, disconnect, or deploy a media file available on the network. When connected, the remote file is accessible in a similar manner as a local file. Two types of media are supported: floppy disk drives and CD/DVD drives.Slot Resource Assignment/ManagementSlot Resource Assignment/Management is used to map or un-map an individual PCIe device to a server slot. It also supports mapping a Virtual Adapter to any of the servers.Server Configuration/CloningThe Server Configuration feature enables the ability to configure the BIOS, Boot Settings, and iDRAC configuration using the nodes interfaces, and then save the configuration to the CMC such that it can be restored or cloned to other servers. This speeds up the deployment of new servers being installed in the chassis. The clone file is in an XML format, and may be edited by the administration to meet the requirements.The Server Configuration feature also enables the One-to-Many Configuration for iDRAC functionality, which allows the administrator to select the Auto-Populate Using QuickDeploy Settings option to populate the iDRAC Network Settings section, and then click Apply iDRAC Network Settings to apply the setting changes to the listed iDRACs. To configure server network settings on one or more individual iDRACs, type or select values for the following properties, and then click Apply iDRAC Network Settings.Slot Displays the slot number where the server is installed in thechassis. Slot numbers are sequential IDs, from 1 to 4 (for the 4slots in the chassis), that help identify the location of the server inthe chassis.NOTE: Only those slots populated by servers display a slotnumber.Name Displays the name of the server in each slot.NOTE: The slot name cannot be blank or NULL.EnableLANSelect this option to enable the LAN channel.Change Root Password Select this option to allow the user to change the password of the iDRAC root user. Make sure to enter the iDRAC Root Password and Confirm iDRAC Root Password options before enabling this option.Server Power ManagementThe Power Management feature enables the ability to set the enclosure-level power cap. This allows the administrator to set a limit on the maximum power that can be input to the system: •W: In Watt. Automatically calculated during the runtime and displayed in the box.•BTU/h: British Thermal Unit For example, 16719.•%: Type a value that indicates the actual percentage of power input versus the maximum power that can be supplied.Chassis GroupingThe Chassis Grouping feature helps conveniently manage multiple VRTX chassis in the same environment. Chassis can be assigned to a Chassis Group. You can assign the chassis to a Chassis Group and administer it through Multi-Chassis management. In this configuration, one chassis is assigned the ‘lead’ role, while the other in the same group is assigned the ‘member’ role. Only the lead chassis has access to the information about a member chassis.Enclosure BackupThe Enclosure Backup feature allows you to make a backup copy of the CMC and chassis configuration settings on the file system of your remote client workstation. The enclosure backup will save information and settings about the overall chassis, including network settings, security certificates, user configuration, and power policy. The enclosure backup also contains slot information, such as slot name and FlexAddress settings. Server-specific information is not saved. The enclosure backup does not include the CMC firmware image. The backup file is encrypted and keyed to this chassis so it cannot be loaded on to another chassis.FlexAddress EnablementThe FlexAddress Enablement features are optional upgrades that allow the CMC to assign WWN/MAC (World Wide Name/Media Access Control) addresses to Fiber Channel and Ethernet devices. Chassis assigned WWN/MAC addresses are globally unique and specific to a server slot within a given chassis. FlexAddress allows the CMC to assign the WWN/MAC address (Chassis Assigned IDs) that stays with a particular slot in the chassis.If a server is replaced, the FlexAddress for the slot remains the same for the given server slot. If the server is inserted in a new slot or chassis, the server-assigned WWN/MAC is used unless that chassis has the FlexAddress feature enabled for the new slot. If you remove the server, it will revert to the server-assigned address. You need not reconfigure deployment frameworks, DHCP servers, and routers for various fabrics for identifying the new server.Dynamic Power Supply EngagementDynamic Power Supply Engagement (DPSE) mode, the power supplies are turned on or turned off on the basis of power consumption, optimizing the energy consumption for the entire chassis.For example:•Your power budget is 1050 Watt•Redundancy policy is set to AC redundancy mode•Four power supply units (PSUs) are installedCMC determines that one of the PSUs is required to support the current power requirements, a second is required to support the AC redundancy policy, and the others remain in standby mode. However, if up to an additional 1050 Watt of power is required for the newly-installed servers, thestandby PSUs are engaged. Standby PSUs are also engaged in the event of an issue with a power grid.This document is for informational purposes only and may contain typographical errors and technical inaccuracies. The content is provided as is, without express or implied warranties of any kind.© 2013 Dell Inc. All rights reserved. Dell and its affiliates cannot be responsible for errors or omissions in typography or photography. Dell, the Dell logo, and PowerEdge are trademarks of Dell Inc. Intel and Xeon are registered trademarks of Intel Corporation in the U.S. and other countries. Microsoft, Windows, and Windows Server are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell disclaims proprietary interest in the marks and names of others.June 2013| Rev 1.0。
方正电子教室-技术白皮书(2003)
方正电子教室2010版技术白皮书经过多年多持续专注的技术研究和积累，方正电子教室在多媒体控制技术方面积累了丰富技术经验、与市场需求信息，并全力在方正电子教室多媒体电子教室产品得到贯彻、运用。
通过将最前沿的动态屏幕截取和网络流控制技术的结合，使得产品性能大幅度本质提升，能够实时流畅的传输动画、课件、视频等屏幕画面，改进了广播、监看、遥控、等主要功能的性能。
依据客户反馈建议，丰富了产品功能，并对产品进行进一步的优化；同时全面支持从Windows XP及Windows 2003、Win7系统。
方正电子教室2010版在性能品质大大提升改进的同时，最大化地保持了产品的连续性，使用方法和使用惯例与前一个版本相同；部分新特性的加入，大都设法作到了自动化和用户透明化，个别需要用户设置的新特性加入到了系统设置中；对于熟悉方正电子教室的用户无须特别的学习和培训就可熟练的使用；对于新用户，只要熟悉Windows系统操作，也可以很快学习掌握的使用和操作。
一、应用对象可广泛适用于大学、中学、小学、培训中心等电脑教室授课环境二、性能特点1.最完整的屏幕显示支持，也能能够彻底支持Direct3D、DirectDraw、OpenGL、Overlay、GDI+图像的屏幕广播教学。
彻底支持三维教学设计软件的广播教学，例如：3DMax、Autocad、Pro－e等；支持窗口、全屏模式下的媒体播放软件广播教学：MediaPlayer、RealPlayer等；支持普通课件的广播教学：PPT、Doc、Photoshop、Flash2.窗口广播模式，智能滚动显示模式、窗口广播老师采用窗口广播模式进行授课，窗口任意移动不受影响。
智能滚动模式支持不同分辨率显示器之间进行教学广播。
窗口广播时，学生可以在接收教师屏幕广播的同时，边学习边操作练习。
3.完美支持语音教学，支持3种方式的语音教学，能够2路混音。
外部音源教学，教师通过Microphone内部音源教学，教师播放音源文件作为教学内容。
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传奇电子教室V15.0技术白皮书目录一、前言 (1)二、系统架构 (1)三、角色划分 (2)四、产品特点 (3)1、新颖的教学方法 (3)2、智能化和易用化 (3)3、功能特色 (3)4、技术特点 (5)五、功能列表 (6)1、教师机端功能 (6)（1）教学功能 (6)（2）在线考试 (8)（3）管理功能 (8)（4）设置功能 (9)（5）定制 (10)（6）配套工具 (10)2、学生端功能 (11)六、运行环境 (11)(一)、软件平台 (11)(二)、硬件平台 (11)1. 学生机 (11)2. 教师机 (12)3. 网络环境 (13)4. 其他硬件设备 (13)七、软件版本信息 (13)八、技术指标 (13)一、前言随着科技的发展，知识更新速度越来越快，传统的课本已不能承载知识的发展，传统的阅读方式已不能有效地获取信息，传统的教学手段已不适应教学的需要。
计算机网络越来越成为丰富知识的载体，网络教学已成为课堂教学的发展趋势。
计算机网络作为一个工具一种手段，所提供的是一种信息，在这个环境里我们可以充分发挥我们的想象力，开发各种应用功能，满足知识更新与知识创新的目的。
同时计算机技朮的飞跃发展，作为未来建设者基地的学校，若只按传统的教学方式进行教学，不仅受到时间、空间的限制而且也不利于老师对学生的个体学习情况的掌握，电子教室（又称多媒体电子教室）的诞生使得老师能够更方便、更系统、更全面的管理教学，对学生的个体学习情况也有很好的掌握。
利用电子教室教学时，我们可以把文本、图形、图像、声音、动画、视频等多种媒体信息及交互控制实时动态地引入教学过程中，充分利用现有的计算机、网络、通讯技朮进行同步或异步教学活动。
二、系统架构：电子教室是一个以WINDOWS系列操作系统和局域以太网为依托的教学平台产品，由运行于学生机端的学生机软件和运行于教师机端的教师机软件两大部分组成，其主要功能均是通过在教师机端和学生机端的交互通讯而实现。
主要功能的实现机理是采用以太网来进行图像声音信号传输。
本产品的软件分为教师端软件和学生端软件两个相对独立的部分，每一个部分在逻辑上均划分为四个层次：(1).人机交互层：主要包括用户界面的显示、用户动作和指令响应、信息的显示等，负责处理教师或学生与机器之间的相互交流。
(2).控制通讯层：主要进行教师机与学生机之间各种控制指令的传输和解释，使教师机与学生机能够相互配合，辅助实现需求规定的各种功能。
(3).功能实现层：具体实现软件需求规定的各种具体功能。
如教学演示、屏幕查看、视频广播等。
(4).外围支持层：主要为整个系统提供支持，如安装程序、硬件驱动、音视频传输网等。
产品架构简图如下：三、角色划分：按照学校目前使用者，我们将用户划分为两种应用：学校教师：教师的任务是教书育人，所以提高教学水平和教学质量以及对学生实行高效、有针对性的管理是所有教师关心的问题。
信息时代，传统的"黑板"、"粉笔"和单一的学生成绩管理都不能满足教师和学生自身素质的提高。
同时，与每个学生在学习上的交流日益起到不可或缺的作用。
但由于当今中国无论哪个学校无论哪个班级，学生数量都不是很少，所以教师对可以实时与学生进行沟通、探讨的电子教室的需要迫在眉睫。
学生：学生的主要任务就是学习，可怎样学习才能更有效更利于吸收呢？以往单一的以考试成绩评价学生素质的说法在这个时代已经被"屏蔽"了，接替它的是对学生综合素质的评价，以此来衡量一个学生是否优秀。
同时，单一的书本对现代教学也不能提供完全的支持。
学生不仅要学，而且要学得有"意思"，更主要的是让学生勤于、便于与教师交流，从而更好地吸收所学的知识。
学生由从前被动地听、接受，变为主动地选择、交流，加大了学生的自主性，在教学上使学生与教师的互动性大大加强，互相促进，提高自身的素质。
四、产品特点：1、科学的教学方法：它紧紧围绕“教学”两字，从“学生为主体，教师为主导”出发，根据教学理论和人的认知理论提炼出科学的教学方法。
教学方法的代表是5步教学法，对于计算机初学者，只要会用鼠标，在功能键区轻轻点击几个按键：教学演示→个别辅导→学生示范→教师讲评→在线考试，保证轻松完成一堂优质高效课程。
2、智能化和易用化：整个产品从安装到使用无处不体现这一精髓思想：（1）智能化安装。
设置了合理的默认值，并且进行自动化检测设置，用户可以不进行任何配置，仅使用鼠标点击确认即可完成安装部署。
（2）用户零维护。
在程序运行安装前，安装程序自动检测电子教室运行所需要的显示模式、声卡、网卡、Winsock版本、Direct版本、TCP/IP协议等，当程序检测到不符合要求时，将出现提示信息。
在线帮助信息和关联功能提示细致全面。
（3）传奇一点通。
常见功能一目了然，不需要进入复杂的菜单，只点击一次即可进入该功能模块。
3、特色功能：（1）在线帮助：完善的帮助信息，时时刻刻帮助用户解决在使用中遇到的问题。
（2）在线考试：电子教室为提高教学效果，引入了教学反馈概念，为用户提供了独特的在线考试功能。
在线考试提供了“制作试卷”、“考前信息设置”、“网络考试”、“考试监控”“试卷评阅”、“成绩统计分析”等实用、易用的功能，实现一条龙电子考试。
支持客观题、主观题和口语考试。
（3）动态调节：在教学演示、教师讲评及个别辅导等与声音有关的选项里，不仅具有自动调用声音选项的功能，而且具有对声音和网络性能的动态调节功能。
（4）自定义功能：设置功能强大，具有对因特网、用户权限、用户界面进行设置的强大功能。
在“用户权限设置”中，可以对学生机登录提示音、学生自由提交作业及各种提示信息等多项权限进行设置，有利于教师对学生机情况的把握从而更好的完成教学任务。
（5）远程设置：可对学生的上网行为进行管理，使学生不能随意浏览网页；可对学生机的运行程序进行限制；可以取消背景桌面和屏幕保护，统一学生机界面；可禁止光驱、USB 接口，保证系统的安全性；可以禁止注册表和任务管理器，保证系统配置不被随意更改，减轻教室维护机房的工作量；可以禁用windows防火墙，保证良好的教学效果；支持学生机断网锁定。
（6）视频点播：支持主流媒体格式，包括Real媒体文件（.rm .rmvb）; Windows媒体文件（.wmv .asf）; 视频剪辑（.avi）;DVD文件（.vob）; MP3格式声音(.mp3); MPEG影片文件（.mpg .mpeg .dat .mp4）;flash视频文件（.flv）等。
（7）协同操作：学生端按快捷键“CTRL+Q”或双击鼠标左键，教师演示窗口将缩小为1/4屏幕大小，此时学生可以边看教师演示边自己跟随操作。
将鼠标移到教师演示窗口上，按住鼠标左键可以自由拖动窗口位置；将鼠标移动到演示窗口的边框还可自由调节窗口的尺寸大小。
同时，学生也可以将教师演示窗口最小化，自己独立操作。
（8）文件服务：在教师机和学生机直接建立方便的文件交流平台。
在教师机自动建立公共目录和各学生机私有目录，学生机可以随时查看、上传或下载各自私有目录的文件，可以查看和下载公共目录的文件。
（9）学生资产：智能检测所有学生机硬件，得到硬件是否损坏、丢失或变更的信息，以便及时维护；得到硬件使用情况，为升级设备提供参考。
（10）电子试题库管理系统：帮助使用者建立、维护和管理自己的试题库，并能够根据题型、范围、难度、题目数量、总分数等条件随机生成符合自己要求的试卷。
配合在线考试模块，以此来实现电子考试的高效和科学，同时减轻教师的负担。
（11）电子课程录制编辑系统：将教学过程中“教”的部分录制下来，编辑整理成视频文件，制作成精品课件。
上课时直接播放即可，而不需要每次上课都再讲一遍。
这样不仅能保证教学的准确完整，而且节省了教师的精力，使教师能够更好地把注意力集中到学生的反馈中，解答问题，做到因材施教，达到更好的教学效果。
还可以将录制的课程下发给学生，方便学生学习。
（12）语言学习系统：传奇语言学习系统是为学生学习外语而提供的软件平台，主要包括复读、跟读、变速不变调、录制、声音对比等模块，能有效提高学习效率，可迅速提高用户的语言听力及口语水平。
与普通复读机相比，功能更加强大。
（13）传奇投票系统：传奇投票系统是一个为用户提供调查和投票的服务平台，可以方便快捷的同时进行多个投票，可以对投票结果自动统计，并支持投票内容的导入和导出。
传奇投票系统不需要安装，也不需要其他插件，复制到硬盘上即可使用；不限定投票的数量，不限定选项的数量，不限定投票人数，应用范围广；支持导入和导出，方便记录保存；操作简便，易学易用，高效稳定。
4、技术特点：（1）直接利用TCP/IP底层通讯协议，使网络传输更加高效。
（2）电子教室独有的网络协调功能，能使教师机、网络设备和学生机协同工作，互相配合。
在一个多媒体网络教室里，教学演示是最重要的教学功能，它的实现是通过教师机抓取屏幕、压缩、传送、学生机接收、回放而成。
这个过程的效果主要取决于整个网络的协调效果。
因为教师机的处理能力通常和学生机不一样，如果教师机处理速度很快，不断地给学生机发送屏幕，而学生机来不及处理势必导致网络堵塞，所以有效平衡网络中各部分处理速度是十分关键的。
电子教室通过控制教师机抓屏和发送速度达到了有效平衡。
（3）网络流量同步控制，通过对 Windows操作系统网络通信核心部件的监控，控制网络流量，不会因为网络忙碌而使重要的控制信息丢失。
充分利用网络带宽，即使10Mbps的网络同样自然流畅。
（4）多线程处理、多任务调度，充分挖掘Windows的多线程与多任务的性能，通过核心处理程序的监管，合理分配作业调度，控制系统工作的性能，合理分配系统作业，不至因为某项作业太忙而影响用户的正常操作。
整体提高了教学演示的效率。
（5）核心对象控制，通过控制WIN32核心对象，使操作系统状态的变化能被我们掌握，得以及时变换应用软件的状态以相适应，保持操作系统与应用程序状态一致。
当广播方和被广播方显示分辨率及色彩数不一致或广播方已动态改变时能及时调整被广播方以使所有状态保持一致。
（6）核心设备直接控制，通过对 Windows操作系统设备驱动程序的改写，获得核心设备的直接控制权，在禁止协同操作的情况下，在教学演示时，可以防止用户使用 Alt+Tab、Ctrl+Alt+Del等操作键中断系统执行影响软件的使用。
防止用户用Ctrl+Alt+Del热键截杀系统软件，保证系统的安全。
学生端程序启动后将自动从任务列表中隐藏电子教室程序运行信息，避免学生敲击CTRL+ALT+DEL，取消程序运行，保证教学的正常进行。
（7）接管原始输入线程实现对设备资源捕获与模拟，通过对 Windows操作系统原始输入线程的控制，实现设备资源的捕获和模拟，将有关资源信息传送给相关程序，使应用程序与操作系统保持完全一致，没有因鼠标形状和键盘状态等不同造成操作不便。